Marginotruncana sp.

Taxonomy

Entries in the Catalog of original descriptions:

Distinguishing features:
Parent taxon (Marginotruncana): Test trochospiral, biconvex to planoconvex, sutures sigmoidal, especially on the umbilical side, curved, elevated and may be beaded on the spiral side, imperforate carinal band between the two peripheral keels, peripheral outline entire to lobulate; wall calcareous, perforate, surface smooth to pustulose; primary aperture interiomarginal and extraumbilical-umbilical, bordered by a triangular porticus, those of successive apertures fusing and may even form true tegilla, infralaminal and occasionally intralaminal accessory apertures present.
This taxon: Specimens which cannot be assigned to established species

Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage).
First occurrence (base): within (-Ma, base in "Holocene" stage).

Plot of range and occurrence data:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
• Taxon plotted: Marginotruncana sp., synonyms included - Marginotruncana angusticarenata; Marginotruncana augusticarinata; Marginotruncana cf. coronata; Marginotruncana gansseri monmouthensis; Marginotruncana indica; Marginotruncana praeconcavata; Marginotruncana sinuosa ?; Marginotruncana (?) sp.; Marginotruncana sp.; Marginotruncana spp.; Marginotruncanid gen. et sp. indet; Marginotruncanid taxa; Marginotruncana pseudolinneiana (q); Marginotruncana renzi (q); Marginotruncana schneegansi (q);
• See also space-time plot :: Samples map :: Parent: Marginotruncana

Marginotruncana sp. compiled by the pforams@mikrotax project team viewed: 12-5-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110343 Go to Archive.is to create a permanent copy of this page - citation notes

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